Initial networking VM

Also general improvements around VMs

nixos/modules/common.nix

@@ -1,6 +1,6 @@
 { lib, pkgs, pkgs', inputs, config, ... }:
 let
-  inherit (lib) flatten optional mkIf mkDefault mkMerge;
+  inherit (lib) mkIf mkDefault mkMerge;
   inherit (lib.my) mkBoolOpt' dummyOption;
 in
 {
@@ -95,17 +95,11 @@ in
         };
       };
 
-      networking = {
-        domain = mkDefault "int.nul.ie";
-        useDHCP = false;
-        enableIPv6 = mkDefault true;
-        useNetworkd = mkDefault true;
-      };
-
       environment.systemPackages = with pkgs; [
         bash-completion
         vim
         ldns
+        minicom
       ];
 
       programs = {
@@ -141,14 +135,6 @@ in
         })
       ];
     })
-    (mkIf config.my.build.isDevVM {
-      networking.interfaces.eth0.useDHCP = mkDefault true;
-      virtualisation = {
-        forwardPorts = flatten [
-          (optional config.services.openssh.openFirewall { from = "host"; host.port = 2222; guest.port = 22; })
-        ];
-      };
-    })
   ];
 
   meta.buildDocsInSandbox = false;